Ventilation refers to the process by which
Air moves in and out of the lungs
The process of breathing requires the coordinated effort of the
Respiratory system, circulatory system, bones, and muscles
Physicians recommend that people breathe through their noses instead of their mouth. What occurs as air is drawn though the nose?
Air is warmed and filtered
As air moves through the nasal cavity, it is humidified by?
Nasal Conchae Function or the Upper Respiratory tract
When air leaves the pharynx, it next enters the?
During the ingestion of food or liquid the tips to block the opening to the trachea
During puberty, the increased production of testosterone in males cause the rapid enlargement of which of the following structures of the respiratory system?
Larynx, (have a bigger adam's apple)
During a cough, what is responsible for constricting the size of the trachea?
contraction of smooth muscle (located where the cartilage rings of the trachea are incomplete)
A small amount of fluid is contained in the pleural cavity to function
lubricates movement of lungs in cavity
maintains slight suction between visceral surface and pleural surface
Bronchioles differ from bronchi in that bronchioles lack?
Arrange in order all the parts that air contacts as it is drawn into the body. (there are 5 parts)
(Pharynx, last part of upper)
3.Bronchi & Bronchioles
During inspiration, intercostal muscles function to?
pull the rib cage up and out, so that lung volume increases.
Air in the airways that does not participate in gas exchange is known as?
anatomical dead space
External respiration is the process of?
moving gases into or out of the blood with lung tissue
Most of the carbon dioxide released by cells is transported in in venous supply in what form?
Bicarbonate ions in plasma
In which of following situations hemoglobin most likely to bind with oxygen?
in a tissue with a neutral pH
Oxygen rich blood flows through the heart via
via the left atrium and ventricle before leaving on the systemic circuit
Breastfeeding has been shown to have no effect on causing breasts to sag later in life, however does contribute to sagging
Carbaminohemoglobin differs from hemoglobin in that carbaminohemoglohin is ?
is bound to carbon dioxide
The respiratory control center is located in?
Which of the following disorders is described as: damage to motor nerves innovating skeletal muscle; skeletal muscles weaken; death usually results 5 years of diagnosis
Amyotrophic lateral sclerosis (ASL)
During exhalation, the pressure inside the lungs?
initially is higher than atmospheric pressure, but drops as air leaves the body
Which of the following results from the stimulation by nerves impulses generated in the respiratory center when they arrive at the muscles involved in inspiration
contraction of the diaphragm
An increase in the amount of carbon dioxide in the body will cause?
parasympathetic stimulation of the heart.
This muscle separates the thoracic cavity from the abdominal cavity?
A condition in which wheezing occurs white breathlessness, a persistent cough, and yields yellowish or greenish phlegm is?
Which of the following is symptom of botulism?
paralysis of muscles used for breathing
Burning of carbon= based fuels can produce , an odorless gas that competes with oxygen for binding to hemoglobin.